Roman Khachatryan created FLINK-30073:
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Summary: Managed memory can be wasted if rocksdb memory is
fixed-per-slot
Key: FLINK-30073
URL: https://issues.apache.org/jira/browse/FLINK-30073
Project: Flink
Issue Type: Bug
Components: Runtime / Task
Affects Versions: 1.15.2, 1.16.0, 1.17.0
Reporter: Roman Khachatryan
When
[state.backend.rocksdb.memory.fixed-per-slot|https://github.com/apache/flink/blob/ba4b182955867fedfa9891bf0bf430e92eeab41a/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/ManagedMemoryUtils.java#L75]
is set, RocksDB does not use managed memory.
However, the runtime [doesn't take this into
account|https://github.com/apache/flink/blob/ba4b182955867fedfa9891bf0bf430e92eeab41a/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/ManagedMemoryUtils.java#L75]
and still reserves the managed memory according to the configured weigths.
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